Nerdulator> put something in

Recognised as Colour

#3999AC

  • #3999AC
  • Cyan
  • Dark
  • Nearest: Cadetblue

#3999AC is a cyan with RGB values 57, 153, 172 and HSL 190°, 50%, 45%. It is a dark colour, so black text on it reaches 6.3:1 contrast (AA for normal text). The nearest named colour is Cadetblue.

Colour values

#3999AC#3999AC
HEX#3999AC
RGBrgb(57, 153, 172)
RGB (0–1)0.2235, 0.6, 0.6745
RGB percentages22.4%, 60%, 67.5%
HSLhsl(189.9, 50.2%, 44.9%)
HSV / HSBhsv(189.9, 66.9%, 67.5%)
CMYK66.9%, 11%, 0%, 32.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,774,892
CSS custom property--colour: #3999AC;

Brightness & contrast

Relative luminance0.26631WCAG 2.x, 0 is black and 1 is white
Perceived brightness134.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.33:1
Contrast with white3.32:1WCAG normal text: Fail
Contrast with black6.33:1WCAG normal text: AA
Greyscale equivalent#868686
Inverted#C66653

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#8B94ADno red cones; affects about 1% of men; ΔE 24.4 from the original
Deuteranopia#7A88ACno green cones; the most common form, about 1% of men; ΔE 25.3 from the original
Tritanopia#00A19Fno blue cones; rare, and affects men and women equally; ΔE 16 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.32:1WCAG large text: AA
Contrast with black, large text6.33:1WCAG large text: AAA

Named colours

Cadetblue · ΔE 11.2Dark cyan · ΔE 14.3Teal · ΔE 15.9Light slate grey · ΔE 20.9Light seagreen · ΔE 21Slate grey · ΔE 21.8
Nearest named CSS colourCadetblue (#5F9EA0)ΔE 11.21, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#AC4C39
Analogous#39AC85, #3960AC
Triadic#AC3999, #99AC39
Split complementary#AC395F, #AC8639
Tetradic#8639AC, #AC4C39, #5FAC39

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C5E5EC
Lighter +30%#9FD5DF
Lighter +20%#79C4D2
Lighter +10%#52B3C6
Darker −10%#2C7786
Darker −20%#20555F
Darker −30%#133339
Darker −40%#061113
More saturated +25%#1CACC9
Less saturated −25%#56868F

Channel breakdown

R57
G153
B172
Red57 (22.4%)
Green153 (60%)
Blue172 (67.5%)
Hue189.91°
Saturation (HSL)50.22%
Lightness44.9%
Dominant channelBlue
Hex per channelR 39 · G 99 · B AC

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

Nerdulate something else

Nothing in mind? Surprise me · today’s page

Every value on this page was computed from “3999ac” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.